Cognomen Леннон (Lennon 
, Lenon , Леннон 
) , in the entire world, is a common last name. The cognomen Леннон is characteristic of Ireland, where it is quite a common surname, Andorra, and Jamaica (explore the name in all countries). Measured by absolute frequency, it is commonest in the United States, the United Kingdom, and Ireland. Much less frequently, Леннон is the forename as well as the last name.